Disassembly of Control Top | Motorola HT 1000 instruction

NOTE: The RF board and the controller board are connected together with a stiff connector strip (P301/P704. See Figure 9.

Controller

Board

RF Board

Connector

Strip

Chassis

MAEPF-22575-A

Figure 9 Removing the RF and Controller Boards

Disassembly of Control Top

1.Remove the rubber controls seal from the control top.

2.Turn the control top such that the grey switch housing cover is facing up.

a.Five retaining clips hold the switch housing cover to the switch housing. Clips 1, 2, and 3 are important during disassembly (see Figure 10).

NOTE: To perform step 2b, two tools will be required; your thumbnail or small, flat-blade screwdriver, and a pen, pencil, or another small, flat-blade screwdriver.

b.Using your thumbnail or small, flat-blade screwdriver, lift the tab that covers the base of the LED approximately 1/16 of an inch from its seated position. While applying constant lifting pressure there, (in order) release clips 1, 2, and 3 with the other tool.

Clip 5

Clip 4	Clip 1

Switch Housing

Cover

Switch

Housing

Clip 3

Clip 2	Lift
	Lift
	Tab

MAEPF-22576-O

Figure 10 Switch Housing Retaining Clips

c.The cover will pop loose from the switch housing.

3.Push the three switches and the LED out of the switch housing.

34

Image 56

Motorola HT 1000 service manual Disassembly of Control Top, Removing the RF and Controller Boards

Contents

HT 1000, JT 1000, MT 2000, MTS 2000, and MTX Series Page Safety Foreword Contents Disassembly and Reassembly Iii Page Replacement Parts Ordering List of Tables Related Publications Available Separately Vii Model Numbering System Viii Model Charts Model Programming Flashing, and Cloning Model Chart Conventional Systems Radios HT 1000 Models Conventional Systems Radios JT 1000 and MT 2000 Models H01RDH9PA3AN Private Systems Radios MTS 2000 Models PMUF6500D A a Xii List of AntennasList of Batteries Maintenance Specifications for VHF Radios Xiii Maintenance Specifications for 800MHz Radios Xiv Glossary ALC PLL Xvi Introduction R N I N GPage Recommended Test Equipment Recommended Test Equipment Service Aids and Recommended Tools Field Programming Service Aids Motorola Part no Description Application Service Tools Recommended Service Tools General Setup Test ModeEquipment Initial Control Settings Earlier. If the radio is placed in Test Mode Test Environments, HT 1000/JT 1000 Radios NO. Description Function Beeps Control Head Test Mode, HT 1000/JT 1000 Radios Test Frequencies, HT 1000 / JTPage Page Test Environments, MT 2000, MTS 2000, and MTX Series Radios Test Frequencies, MT 2000, MTS 2000, and MTX Series Radios Receiver Performance Checks Test Name Communications Radio Test SET Comments Analyzer Transmitter Performance Checks Test Communications Radio Test SET Comments Name Analyzer Power-up Display Codes Error-Code DisplaysPower-up Display Codes Operational Display Codes Operational Display Codes Radio Alignment Procedure General Dtmf Perform the following procedures in the sequence indicated Reference Oscillator Alignment Standard Test Modulation 1 kHz Tone Front-End Pre-Selector VHF/UHF onlyRated Audio Transmitter Power Squelch Transmit Power Setting VHF UHF Transmit Deviation Limit Transmit Deviation Limit Transceiver Board Identification Transmit Deviation Limit ReferencePage TX VCO Crossover Procedure Dtmf Tuning High Speed Signalling Signalling DeviationRX VCO Crossover Procedure Signalling Deviation MDC Disassembly and Reassembly This Radio Contains STATIC-SENSITIVE Disassembly to Board Level Removing the Battery Separating the Cover From the Chassis Rotating the Front Cover Separating Control Top From the Chassis Disassembly of Control Top Removing the RF and Controller Boards Disassembly of Front Cover Assembly Reassembly Removing the Keypad/Display Board Reinstalling the Speaker RetainerMAEPFBracket-22578-A Page Front Cover Assembly to Chassis Seating the Flex Knobs, Antenna, and Battery Maintenance Preventive MaintenanceInspection Cleaning Introduction Safe Handling of Cmos Devices General Specific If neighboring Pbga components are heatedAbove 365 degrees F degrees C., they will Suffer die-bond delamination and possible Solder Tabs Page U t i o n Thin Small Outline Package Tsop Components To Replace an Pbga compo- nent Removing and Replacing Shields To Remove the RF PA To Replace the RF PAPage Exploded Views Refer to electrical parts list transceiver board Top-Display Radios Keypad Radios Uni-board Radios SHIELD, PAPage Transceiver Controller Schematic and Circuit Board Notes Circuit Board Layers Integrated Circuit Details with Pin-Out Names SYN 35U50 X Wlyww Wlyww Universal Connector Pin Numbers and Signal Assignments Universal Connector Option Select OPT SEL Definition MAEPF-2 CAPACITOR, Fixed pF ± 5% Unless statedDiode See Note Fuse 1-Amp U102 Error Feedback NC NC NC NC CLK5VREG SB+ BATT+ MAEPF-2630 CAPACITOR, Fixed pF ±30% Transistor See NoteRESISTOR, Fixed Ω ± 5% 0625W unless stated Switch Connector EXT. ANTThese Levels Measured by Removing R52 DAC CLK NC NC NC NC NC CLK DET VDD VDD2Cext Batt MAEPF-2630 COIL, RF nH CAPACITOR, Fixed pF ± 25%50V unless stated RF Switch CR6 CR7 CR8 CR9ABP GND1 GND2 GND3 AG2 GND1 GND2 GND3 GND4 GND5 VDD VDD2 DETNC3 NC4 NC5 NC6 NC7 NC8 NC9 VMULT2 Frefout MAEPF-26305 3Pack.xls CAPACITOR, Fixed pF ± 5% Sheet Unless stated RESISTOR, Fixed Ω ± 0.0625W U105 U104 5VREG LCK VCO MOD RAW B+LCK SW B+ SYN SEL Transceiver Board Parts List and Component Location Diagrams CAPACITOR, Fixed pF ±5% Fuse 1.0A Filter See Note 2, 73.35MHZRESISTOR, FixedΩ ± 5% .0625W unless stated DIODE, Zener See Note 1 U101 CLK Batt GND32GND31 GND30 NUF6499B/C and NUF6502B/C 900MHz Diode U105 SYN SYN SEL GND30 REF OSCGND27 GND21 NUF/PMUF6499D 900MHz Electrical Parts List, Transceiver 900MHz NUF/PMUF6499D Reset 5V TX 0V RX ANODE2 Pacntl INT CAP Antswbs SwitchGND GND1 GND2 RF Switch To Universal Connector Synthesizer Je di HT/JT Tra ns . DIODE, Zener HearClear Option U701Hear Clear Resetb U702U708 Asficsel SB+ Intspkr Error Intmic Optenable SpkrcomSpkrcom Aupaen Extspkr Volsense NC3 Extspkrsel NC5 NC6 NC7 NC8 U709U706 Controller BOARD’ Parts List and Component Location Diagram RESISTOR, Fixed Ω ± 5% Chact Reset GND10 GND11 GND12 GND13 Gnda GND VEE Upclk A3 Clke VDD3 VDD4Vccence Enoe Enwe Busy Power Section Analog Section SCKSPI TX Data Mosi SPI RX Data Miso Main Power Switch Vdd RegulatorVaud Regulator U712 MAEPF-25672 DIODE, Zener See Note 103CAPACITOR, Fixed pF ± Hiclmpen Compen Lcdis Hcidis Ffen Sqdet Chact Univio Pwrrst Sqdet ChactIcenab Ffout Cpnenab Expout Ffenab Cbufou UV2CS Bootstrp VSS4 VSS1 Synsel Roscsel Ascficsel Bootstrp CsgenScirx Eecs Muxcntl SEL LED Uvcs SWB+ GND1 Blcntl Intspkr Reset Spkrcom Intmic OPTB+/BOOTSEL MosiGND2 Keyint OPTSEL1 Extspkr Datalatch Extmic NTN7512D/E, NTN7513E, NTN7857D/E and NTN7858D/E 107 MAEPF-26096 109 HearClear Components Not Placed on NCN6176ACAPACITOR, Fixed pF ± 5% 50V unless stated RESISTOR, Fixed Ω ± 0.0625W unless stated SWB+ Sqdet Chact Expin Lodsab Cbufin Expbyp RssiinFfin VAG Nfilin Ffcnt L U705 Digital Section Main Power Switch Vdd Regulator U702 Front Cover Display Flex Replacement Parts Ordering Motorola OnlineMail Orders 115 Telephone Orders FAX OrdersParts Identification 116 Appendix a Appendix aIntroduction Circuit Description Signal Name Connector Plug Function P1 PIN Number Appendix . Secure Module Troubleshooting Secure Operations Service Aid Retrofit Instructions Appendix a . Key Variable Loader Anti-static precautions must be observed at all times GeneralSet Secure-Equipped Field Set XL IC Present Field Secure Alignment Procedure Enable Secure On DesiredSecure Retrofit Tuning Channels Compensation Appendix a . Secure Deviation Removal And Installation Removal Appendix . Secure Module Location Detail Appendix a . RSS Secure Parameters XL&XL Appendix B Appendix BAppendix B . HT 1000 Models H01RDC9AA1BN Appendix B . JT 1000 Models Appendix B . MT 2000 Models PMUE7272B PMCN6147B H01SDH9AA7AN Appendix B . MTS 2000 Models H01RDD9PW1AN H01RDH9PW1AN H01SDH9PW1AN H01UCH6PW1AN PMUF6499D Pmcn Appendix B . MTX Series Models H01KDF9DB5AN H01RDD9DB4AN H01RDH9DB7AN H01SDH9DB7AN H01UCC6DF3AN H01WCC4DB3AN H01WCH4DB7AN Page Motorola, Inc West Sunrise Boulevard Ft. Lauderdale, FL